What is the spec on a pinion nut?
If you are talking about the pinion nut it is not hand tighten. The spec measures the torque required to turn the pinion gear by itself once the nut is tightened. The spec is NOT the torque applied to tighten the nut. That is whatever it takes to achieve the pinon bearing pre-load which is determined as described above.
What should the crank runout be on a Harley Davidson?
But HD is not gonna do anything for anyone with a crank runout under .012″. Of course his ’02 is probably out of warranty, so it may be on his nickel anyway. Andrews does indicate that the MAX runout for the gear-drive option is .003″. But the target if someone is gonna have the crank trued, TIG welded and retrued should be in the .001″ or less.
What is the clearance between the crank journal and the main bearing?
So in the case of a 2.500-inch main bearing with a vertical clearance of 0.0025-inch, this establishes there is only 0.00125-inch clearance between the crank journal and the main bearing at the top and bottom.
How big is the torque cap on a pinion?
Pinion Preload (Reused) Ring Gear Backlash Ring Gear Bolt Torque Carrier Bearing Cap Bolts Chrysler 7.25″ 12 to 14 in-lbs. 6 to 7 in-lbs. .006″ to .010″ 55 ft-lbs.
What should the runout of a new crankshaft be?
Depending upon the application, new crankshaft specs call for runout and taper of no more than 0.0002-inch for both rods and mains. Measure the crankshaft journal and record the diameter on a sheet for all the journals. For a new crankshaft, you should find the rods and mains will probably vary no more than +/- 0.0001-inch.
What should the bearing clearance be on a crankshaft?
The commonly accepted rule that most crankshaft manufacturers prefer for street and performance engines is 0.0010-inch for every 1-inch of journal diameter. So for a 2.45-inch small-block main journal, the bearing clearance would be 0.0024-inch. For a smaller 2.100-inch rod journal, the accepted clearance would be 0.0021-inch.
If you are talking about the pinion nut it is not hand tighten. The spec measures the torque required to turn the pinion gear by itself once the nut is tightened. The spec is NOT the torque applied to tighten the nut. That is whatever it takes to achieve the pinon bearing pre-load which is determined as described above.
What are the different sizes of race bearings?
Most race bearing manufacturers will offer bearings in +/- sizes. For example, Federal Mogul offers main and rod bearings in 0.001-inch under and oversize versions within the lineup of standard, 0.010-inch, 0.020-inch undersized bearings. That allows you to set the clearance by adjusting, even with half-shells.